Mars 3 (Various Topics Merged) Options

[tolis]

Hi,

Nice video!

One search method that *might* work for Mars 3 is to scan the area by magnetometer on a near-surface balloon.
Mars 3 landed in an area that we now know is characterised by strong remanent magnetisation. Being made of metal I would imagine that
it has the same effect on magnetic field lines as, say, a submerged submarine has on Earth's magnetic field. Perhaps a balloon-suspended magnetometer
surveying the area at an altitude of a few hundred metres can pick up its signature. This is an involving process to be sure, but
not quite as involving as someone going over the surface with a metal detector.

Tolis.



Mod: no need to quote the whole previous post.

[Geert]

One search method that *might* work for Mars 3 is to scan the area by magnetometer on a near-surface balloon.

I wish somebody came up with the budget to do that

But seriously, the area is tremendously big, those landing coordinates are only very, very, vague. The soviets did not have clear ephemeris data of Mars at the time of the landing, the whole EDL process was completely pre-set and fixed, and the entry was ballistic with no guidance steering or anything. I expect only the latitude is more or less known (given the EDL procedure the lander should end up at a latitude which corresponds with the inclination of the orbit around Mars the mothership ended up in), but longitude is very, very uncertain. It can easily have ended up hundreds of kilometers off target, so even with a balloon you will have a tremendous area to survey...

The amazing fact that we still haven't been able to find the wreckage of MPL (of which we are reasonably certain where it should be..) shows just how difficult it is to find 'lost' spacecraft. Mars 3 and 6 are much smaller, there parachutes are probably (almost?) invisible by now and the craft covered by dust (and more or less resembling an average stone..). And it's not that you don't find anything, if you look in the HiRISE images there are lots and lots of big stones over there, and the more you look the more 'suspicious' objects you start to see.. The frustrating thing is that in the end even HiRISE doesn't have enough resolution to clearly identify a Mars 3/6 sized lander (covered with dust), and if you don't find a very clear sign of a parachute then in the end the only solution would be to go down there yourself to check each and every of those suspicious stones, wish I could...

[yurdel]

Very good and as far as I can judge technically correct animation!
...
Only remark is that you show the parachute separating on firing of the soft landing engines, the way I read the booklet of Perminov ('The difficult road to Mars') and especially the drawing on page 47 it seems to me like the parachute remained attached to the softlandingrocket and the instrument shell (similar to what was done with Pathfinder and MER), after the lander is released the softlandingrocket is shown more or less shooting into the parachute and taking the whole thing away from the lander.
...

Thanks!

I'm animate this picture -

Attached thumbnail(s)

 

[nprev]

That was very cool, Yurdel; extremely interesting work, thank you!

[Geert]

I'm animate this picture -

The booklet of Perminov you can download here

The drawing you animate is on page 50 of the pdf, the picture I am referring to is on page 51. There is indeed a difference in how the parachute is released. On page 49 of the book the description is:

Depending on the descent velocity, in an altitude range of 16 to 30 meters, the high-altitude radar-altimeter issues a command; the onboard radio system is disconnected, the engine that controls the soft landing is started, and a second PVM program is initiated. When the landers vertical speed of descent drops to 6.5 meters per second, the low-altitude radar-altimeter issues a command to break the metallic ribbons that attach the parachute-instrument module to the automatic Martian station. Simultaneously, the engine that controls the maneuvering of the parachute container is started.

This seems to indicate the parachute remained attached to the parachute container while the soft landing engine was firing (as shown in page 51 drawing), but I agree that the 2 drawings differ in this, I'm afraid only way to make sure is find one of the original technicians and ask...

I'm also interested in what was the color of the parachute, some of the artwork seems to suggest it was red-white which is a pity given the red colored landscape on Mars, they should make parachutes for Mars landers bright green or something...

[tedstryk]

Amazing work!

[Bjorn Jonsson]

Wow - this was and extremely interesting piece of work.

[4th rock from th...]

Very nice animation! A step by step illustrated time-line, using stills from it would also be nice and informative.

[hendric]

Yurdel,
Very cool. Did you do this for a class? Do you have plans to do other missions?

[djellison]

Very nice - I've always thought it would be fantastic to have old missions given the same CG treatment as MER and Phoenix. This is the first step on that road!

[mhoward]

Very nice! The vector animation somehow suits the earlier period of time that this probe comes from.

[yurdel]

Yurdel,
Very cool. Did you do this for a class? Do you have plans to do other missions?

Thanks to all!
Yes, I will do also other missions.

[PDP8E]

Happy MARS 3 Landing Anniversary (well, yesterday: Dec 2, 1971 -- Dec 2, 2009)

It has now been 38 years and only one HiRise image of the neighborhood!

We shall find you yet!

Cheers

(this thread is 2 years old...yikes!)

[yurdel]

The flashclip about Mars 3 has been added by music and other scenes - Mars-3 flash site

[Phil Stooke]

Resurrecting an old thread... but it seems better than starting a new one, especially because the images are just above this post... I just had one of those epiphany things.

I was looking at this:

http://www.mrc.uidaho.edu/entryws/full/pro...e_detailed.html

(Presentation 1.41 about Venera probes, but it also covers Mars 3 and Mars 6). A picture and diagram of Mars 3 shows the dual camera system - it had two cameras like Luna 13, not one camera like Luna 9. But the Luna 13 panoramic image starts with a messy area which is really a closeup of the second camera (which failed to operate). Is this what is being viewed in the fragment of a panorama from Mars 3? In this view it would be real image data, but useless - if the Luna 13 image is anything to go by it's not a reflection of the surface of Mars in the camera body. But it might explain what is being seen.

Phil